﻿//The MIT License

//Copyright (c) 2009 Lluis Sanchez, Nick Darnell

//Permission is hereby granted, free of charge, to any person obtaining a copy
//of this software and associated documentation files (the "Software"), to deal
//in the Software without restriction, including without limitation the rights
//to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//copies of the Software, and to permit persons to whom the Software is
//furnished to do so, subject to the following conditions:

//The above copyright notice and this permission notice shall be included in
//all copies or substantial portions of the Software.

//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
//THE SOFTWARE.

using System.Reflection.Emit;
using System.Collections.ObjectModel;

namespace Polymorph
{
    public class CodeTry : CodeStatement
    {
        private CodeBlock m_tryBlock;

        public CodeTry()
        {
        }

        public CodeBlock TryBlock
        {
            get { return m_tryBlock; }
            set { m_tryBlock = value; }
        }

        public override void Generate(ILGenerator gen)
        {
            Label exLabel = gen.BeginExceptionBlock();
            m_tryBlock.Generate(gen);
            gen.EndExceptionBlock();
        }

        public override void PrintCode(CodeWriter cp)
        {
            cp.Write("try");
            cp.EndLine();
            cp.WriteLine("{");
            cp.Indent();

            ReadOnlyCollection<CodeItem> items = m_tryBlock.Items;
            int lastStatementIndex = -1;
            for(int i = 0; i < m_tryBlock.Items.Count; i++)
            {
                if (items[i] is IExceptionBlock)
                    break;

                lastStatementIndex = i;
            }

            for (int i = 0; i <= lastStatementIndex; i++)
            {
                cp.BeginLine();
                items[i].PrintCode(cp);
                //if (items[i] is CodeExpression)
                    cp.Write(";");
                cp.EndLine();
            }

            cp.Unindent();
            cp.BeginLine();
            cp.Write("}");

            for (int i = lastStatementIndex + 1; i < items.Count; i++)
            {
                cp.EndLine();
                cp.BeginLine();
                items[i].PrintCode(cp);
            }
        }
    }
}